CS5421 datasheet(5/14 Pages) ONSEMI

Numer części	CS5421

Szczegółowy opis	Dual Out?뭥f?뭁hase Synchronous Buck Controller with Remote Sense

PDF	14 Pages

Scroll/Zoom	100%

Producent	ONSEMI [ON Semiconductor]

Strona internetowa	http://www.onsemi.com

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CS5421

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PACKAGE PIN DESCRIPTION (continued)

PACKAGE PIN #

FUNCTION

PIN SYMBOL

16 Lead SO Narrow

FUNCTION

PIN SYMBOL

VFB2

Error amplifier inverting input for channel 2.

VFFB2

Input for the channel 2 PWM comparator.

ROSC

A resistor from this pin to ground sets switching frequency.

VCC

Input Power supply pin.

PGND2

High Current ground for the GATE(H)2 and GATE(L)2 pins.

GATE(L)2

Low Side Synchronous FET driver pin for the channel 2 FET.

GATE(H)2

High Side Switch FET driver pin for the channel 2 FET.

VCC

Set

Dominant

VFFB1

LGND

PWM

Comparator 1

PWM

Comparator 2

Reset

Dominant

CURRENT

SOURCE

GEN

VCC

FAULT

BIAS

FAULT

RAMP1

GATE(H)1

5.0 μA

0.45 V

0.25 V

8.6 V

7.8 V

VFB

COMP1

−

VFFB2

COMP2

SGND

RAMP2

FAULT

Reset

Dominant

GATE(L)1

PGND1

GATE(H)2

GATE(L)2

PGND2

VCC

RAMP1

RAMP2

CLK1

CLK2

OSC

0.45 V

1.0 V

E/A2

E/A OFF

E/A1

E/A OFF

ROSC

1.0 mA

VFB2

1.0 V

VCC

Figure 2. Block Diagram

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